Bug 217798 - Need to port Resource Group optimization from gfs1 to gfs2
Need to port Resource Group optimization from gfs1 to gfs2
Product: Red Hat Enterprise Linux 5
Classification: Red Hat
Component: gfs2-utils (Show other bugs)
All Linux
medium Severity medium
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Assigned To: Robert Peterson
GFS Bugs
Depends On:
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Reported: 2006-11-29 17:40 EST by Robert Peterson
Modified: 2010-01-11 22:36 EST (History)
3 users (show)

See Also:
Fixed In Version: RC
Doc Type: Bug Fix
Doc Text:
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Clone Of:
Last Closed: 2007-02-07 20:06:09 EST
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RHEL 7.3 requirements from Atomic Host:
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Attachments (Terms of Use)
Patch to fix the problem (5.34 KB, patch)
2006-11-29 18:02 EST, Robert Peterson
no flags Details | Diff

  None (edit)
Description Robert Peterson 2006-11-29 17:40:39 EST
Description of problem:
For bz213763, we changed gfs_mkfs so that it can optimize the size
of the Resource Groups (RGs) for best performance.  We need to port
that fix from gfs1 (gfs_fsck) to gfs2 (mkfs.gfs2).

Version-Release number of selected component (if applicable):

How reproducible:

Steps to Reproduce:
mkfs.gfs2 -t marathon:gfs_vs0 -p lock_dlm -j 5 /dev/linear_1/linear_10
where /dev/linear_1/linear-10 is a 40TB logical volume.
Actual results:
mkfs.gfs2 uses the old default, 256MB RG size, which requires 
more than 150000 RGs.

Expected results:
mkfs.gfs2 should figure out that 256MB would require more than 10000
RGs, and therefore it should use 2048MB RGs for best performance.

Additional info:
Prototype patch is already coded.
Comment 1 Robert Peterson 2006-11-29 18:02:56 EST
Created attachment 142454 [details]
Patch to fix the problem

Unit tested on marathon-01.
Comment 3 Rob Kenna 2006-11-30 07:32:01 EST
Made the title more descriptive.

This is a port of the fix for bug 213763.
Comment 4 Robert Peterson 2006-11-30 10:33:28 EST
I committed the fix to CVS in the HEAD, RHEL5 and RHEL50 branches.
Comment 5 RHEL Product and Program Management 2007-02-07 20:06:09 EST
A package has been built which should help the problem described in 
this bug report. This report is therefore being closed with a resolution 
of CURRENTRELEASE. You may reopen this bug report if the solution does 
not work for you.

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